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class="post-title">SpringBoot使用EasyExcel</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><svg class="meta_icon post-meta-icon" style="width:30px;height:30px;position:relative;top:10px"><use xlink:href="#icon-rili"></use></svg><span class="post-meta-label">发表于 </span><time class="post-meta-date-created" datetime="2023-08-12T13:56:11.000Z" title="发表于 2023-08-12 21:56:11">2023-08-12</time><span class="post-meta-separator">|</span><svg class="meta_icon post-meta-icon" style="width:18px;height:18px;position:relative;top:5px"><use xlink:href="#icon-gengxin1"></use></svg><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2024-04-26T09:52:18.180Z" title="更新于 2024-04-26 17:52:18">2024-04-26</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><svg class="meta_icon post-meta-icon" style="width:18px;height:18px;position:relative;top:5px"><use xlink:href="#icon-biaoqian"></use></svg><a 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class="word-count">3806</span><span class="post-meta-separator">|</span><svg class="meta_icon post-meta-icon" style="width:20px;height:20px;position:relative;top:5px"><use xlink:href="#icon-shizhong"></use></svg><span class="post-meta-label">阅读时长:</span><span>18分钟</span></span><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="SpringBoot使用EasyExcel"><svg class="meta_icon post-meta-icon" style="width:25px;height:25px;position:relative;top:5px"><use xlink:href="#icon-eye"></use></svg><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div><section class="main-hero-waves-area waves-area"><svg class="waves-svg" xmlns="http://www.w3.org/2000/svg" xlink="http://www.w3.org/1999/xlink" viewBox="0 24 150 28" preserveAspectRatio="none" shape-rendering="auto"><defs><path id="gentle-wave" d="M -160 44 c 30 0 58 -18 88 -18 s 58 18 88 18 s 58 -18 88 -18 s 58 18 88 18 v 44 h -352 Z"></path></defs><g class="parallax"><use href="#gentle-wave" x="48" y="0"></use><use href="#gentle-wave" x="48" y="3"></use><use href="#gentle-wave" x="48" y="5"></use><use href="#gentle-wave" x="48" y="7"></use></g></svg></section></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><h1 id="目录"><a href="#目录" class="headerlink" title="目录"></a>目录</h1><p>[TOC]</p>
<h1 id="参考"><a href="#参考" class="headerlink" title="参考"></a>参考</h1><p><a target="_blank" rel="noopener" href="https://www.bilibili.com/video/BV1mG4y1f7jr/">https://www.bilibili.com/video/BV1mG4y1f7jr/</a></p>
<h1 id="导入依赖"><a href="#导入依赖" class="headerlink" title="导入依赖"></a>导入依赖</h1><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">&lt;!--EasyExcel--&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>com.alibaba<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>easyexcel<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">version</span>&gt;</span>3.3.2<span class="tag">&lt;/<span class="name">version</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">DROP</span> <span class="keyword">TABLE</span> IF <span class="keyword">EXISTS</span> `<span class="keyword">user</span>`;</span><br><span class="line"><span class="keyword">CREATE</span> <span class="keyword">TABLE</span> `<span class="keyword">user</span>` (</span><br><span class="line">  `id` <span class="type">bigint</span> <span class="keyword">NOT</span> <span class="keyword">NULL</span> AUTO_INCREMENT COMMENT <span class="string">&#x27;自增id&#x27;</span>,</span><br><span class="line">  `nickname` <span class="type">varchar</span>(<span class="number">32</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;用户昵称&#x27;</span>,</span><br><span class="line">  `avatar` <span class="type">varchar</span>(<span class="number">255</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;用户头像链接&#x27;</span>,</span><br><span class="line">  `username` <span class="type">varchar</span>(<span class="number">32</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;用户名&#x27;</span>,</span><br><span class="line">  `password` <span class="type">varchar</span>(<span class="number">255</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;密码，加密存储&#x27;</span>,</span><br><span class="line">  `salt` <span class="type">varchar</span>(<span class="number">32</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;密码盐值&#x27;</span>,</span><br><span class="line">  `gender` tinyint(<span class="number">1</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> <span class="keyword">DEFAULT</span> <span class="string">&#x27;0&#x27;</span> COMMENT <span class="string">&#x27;性别，0表示未知，1表示男性，2表示女性&#x27;</span>,</span><br><span class="line">  `birthday` <span class="type">date</span> <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;生日&#x27;</span>,</span><br><span class="line">  `email` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;邮箱&#x27;</span>,</span><br><span class="line">  `phone` <span class="type">varchar</span>(<span class="number">11</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;手机号&#x27;</span>,</span><br><span class="line">  `qq` <span class="type">varchar</span>(<span class="number">16</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;QQ号码&#x27;</span>,</span><br><span class="line">  `wechat` <span class="type">varchar</span>(<span class="number">32</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;微信号&#x27;</span>,</span><br><span class="line">  `weibo` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;微博账号&#x27;</span>,</span><br><span class="line">  `github` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;GitHub账号&#x27;</span>,</span><br><span class="line">  `linkedin` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;LinkedIn账号&#x27;</span>,</span><br><span class="line">  `country_code` <span class="type">varchar</span>(<span class="number">5</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;国家代码&#x27;</span>,</span><br><span class="line">  `province` <span class="type">varchar</span>(<span class="number">16</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;省份&#x27;</span>,</span><br><span class="line">  `city` <span class="type">varchar</span>(<span class="number">16</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;城市&#x27;</span>,</span><br><span class="line">  `address` <span class="type">varchar</span>(<span class="number">128</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;地址&#x27;</span>,</span><br><span class="line">  `post_code` <span class="type">varchar</span>(<span class="number">6</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;邮编&#x27;</span>,</span><br><span class="line">  `last_login_time` datetime <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;最近一次登录时间&#x27;</span>,</span><br><span class="line">  `last_login_ip` <span class="type">varchar</span>(<span class="number">15</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;最近一次登录IP地址&#x27;</span>,</span><br><span class="line">  `status` tinyint(<span class="number">1</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> <span class="keyword">DEFAULT</span> <span class="string">&#x27;1&#x27;</span> COMMENT <span class="string">&#x27;用户状态，0表示禁用，1表示启用&#x27;</span>,</span><br><span class="line">  `create_time` datetime <span class="keyword">NOT</span> <span class="keyword">NULL</span> <span class="keyword">DEFAULT</span> <span class="built_in">CURRENT_TIMESTAMP</span> COMMENT <span class="string">&#x27;创建时间&#x27;</span>,</span><br><span class="line">  `update_time` datetime <span class="keyword">NOT</span> <span class="keyword">NULL</span> <span class="keyword">DEFAULT</span> <span class="built_in">CURRENT_TIMESTAMP</span> <span class="keyword">ON</span> <span class="keyword">UPDATE</span> <span class="built_in">CURRENT_TIMESTAMP</span> COMMENT <span class="string">&#x27;修改时间&#x27;</span>,</span><br><span class="line">  `remark1` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;自定义字段1&#x27;</span>,</span><br><span class="line">  `remark2` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;自定义字段2&#x27;</span>,</span><br><span class="line">  `remark3` <span class="type">varchar</span>(<span class="number">64</span>) <span class="type">CHARACTER</span> <span class="keyword">SET</span> utf8mb4 <span class="keyword">COLLATE</span> utf8mb4_0900_ai_ci <span class="keyword">DEFAULT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;自定义字段3&#x27;</span>,</span><br><span class="line">  <span class="keyword">PRIMARY</span> KEY (`id`) <span class="keyword">USING</span> BTREE,</span><br><span class="line">  <span class="keyword">UNIQUE</span> KEY `idx_username` (`username`) <span class="keyword">USING</span> BTREE COMMENT <span class="string">&#x27;唯一索引，保证用户名唯一&#x27;</span></span><br><span class="line">) ENGINE<span class="operator">=</span>InnoDB AUTO_INCREMENT<span class="operator">=</span><span class="number">1</span> <span class="keyword">DEFAULT</span> CHARSET<span class="operator">=</span>utf8mb4 <span class="keyword">COLLATE</span><span class="operator">=</span>utf8mb4_0900_ai_ci ROW_FORMAT<span class="operator">=</span><span class="keyword">DYNAMIC</span> COMMENT<span class="operator">=</span><span class="string">&#x27;用户表&#x27;</span></span><br></pre></td></tr></table></figure>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.annotation.ExcelProperty;</span><br><span class="line"><span class="keyword">import</span> lombok.Data;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 用户信息excel映射类</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Data</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">UserExcelEntity</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@ExcelProperty(value = &quot;编号&quot;)</span></span><br><span class="line">    <span class="keyword">private</span> Long id;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@ExcelProperty(value = &quot;昵称&quot;)</span></span><br><span class="line">    <span class="keyword">private</span> String nickname;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@ExcelProperty(value = &quot;用户名&quot;)</span></span><br><span class="line">    <span class="keyword">private</span> String username;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@ExcelProperty(value = &quot;密码&quot;)</span></span><br><span class="line">    <span class="keyword">private</span> String password;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h1 id="文件导入"><a href="#文件导入" class="headerlink" title="文件导入"></a>文件导入</h1><h2 id="基本方式导入"><a href="#基本方式导入" class="headerlink" title="基本方式导入"></a>基本方式导入</h2><blockquote>
<p><strong>基本方式导入，程序中获取到的数据为<code>Map</code>类型</strong></p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.File;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 1、基本方式导入</span></span><br><span class="line"><span class="comment"> * Date: 2023/8/12</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> XiaoFei</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">BaseImport</span> &#123;</span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title function_">main</span><span class="params">(String[] args)</span> &#123;</span><br><span class="line">        <span class="type">File</span> <span class="variable">file</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">File</span>(<span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\user.xlsx&quot;</span>);</span><br><span class="line"></span><br><span class="line">        List&lt;Object&gt; list = EasyExcel.read(file).sheet(<span class="number">0</span>).doReadSync();</span><br><span class="line"></span><br><span class="line">        list.forEach(System.out::println);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230812232426105.png" alt="image-20230812232426105"></p>
<h2 id="模型映射导入"><a href="#模型映射导入" class="headerlink" title="模型映射导入"></a>模型映射导入</h2><h3 id="基本语法"><a href="#基本语法" class="headerlink" title="基本语法"></a>基本语法</h3><ul>
<li><p>关联映射</p>
<ul>
<li><p>@ExcelProperty(index = 0)</p>
</li>
<li><p>@ExcelProperty(value = “列名”)</p>
</li>
<li><p>@ExcelProperty(value = {“主标题”, “副标题”})</p>
</li>
</ul>
</li>
<li><p>格式转换，注解都是属于<code>com.alibaba.excel.annotation</code>下的</p>
<ul>
<li>@DateTimeFormat(value = “yyyy年MM月dd日 HH时mm分ss秒”)</li>
<li>@NumberFormat(value = “#.##%”)</li>
<li>@ExcelProperty(converter = 自定义格式转换.class)</li>
</ul>
</li>
<li>相关方法<ul>
<li>EasyExcel.read(inputStream).head(映射模型.class).xxx</li>
</ul>
</li>
</ul>
<h3 id="使用"><a href="#使用" class="headerlink" title="使用"></a>使用</h3><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.File;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 1、文件导入</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">FileImport</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 模型映导入</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">modelMapImport</span><span class="params">()</span> &#123;</span><br><span class="line"></span><br><span class="line">        <span class="type">File</span> <span class="variable">file</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">File</span>(<span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\user.xlsx&quot;</span>);</span><br><span class="line"></span><br><span class="line">        List&lt;UserExcelEntity&gt; list = EasyExcel.read(file).head(UserExcelEntity.class).sheet(<span class="number">0</span>).doReadSync();</span><br><span class="line"></span><br><span class="line">        list.forEach(System.out::println);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230813100133627.png" alt="image-20230813100133627"></p>
<h2 id="导入的监昕器"><a href="#导入的监昕器" class="headerlink" title="导入的监昕器"></a>导入的监昕器</h2><h3 id="使用EasyExcel自带监听器"><a href="#使用EasyExcel自带监听器" class="headerlink" title="使用EasyExcel自带监听器"></a>使用EasyExcel自带监听器</h3><p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230813110435387.png" alt="image-20230813110435387"></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.read.listener.PageReadListener;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.File;</span><br><span class="line"><span class="keyword">import</span> java.io.FileInputStream;</span><br><span class="line"><span class="keyword">import</span> java.io.FileNotFoundException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 1、文件导入</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">FileImport</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 导入监听器</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">listenerImport</span><span class="params">()</span> <span class="keyword">throws</span> FileNotFoundException &#123;</span><br><span class="line"></span><br><span class="line">        <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">FileInputStream</span>(<span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\user.xlsx&quot;</span>);</span><br><span class="line"></span><br><span class="line">        EasyExcel.read(inputStream, UserExcelEntity.class, <span class="keyword">new</span> <span class="title class_">PageReadListener</span>&lt;&gt;(<span class="built_in">this</span>::consumerMethod)).sheet(<span class="number">0</span>).doRead();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 消费函数，监听器会自动调用该函数，对数据进行消费</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">void</span> <span class="title function_">consumerMethod</span><span class="params">(List&lt;UserExcelEntity&gt; list)</span> &#123;</span><br><span class="line">        list.forEach(System.out::println);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h3 id="使用自定义监听器"><a href="#使用自定义监听器" class="headerlink" title="使用自定义监听器"></a>使用自定义监听器</h3><blockquote>
<p><strong>创建一个类，实现<code>ReadListener</code>接口</strong></p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.context.AnalysisContext;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.read.listener.ReadListener;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 用户信息excel导入监听器</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">UserListener</span> <span class="keyword">implements</span> <span class="title class_">ReadListener</span>&lt;UserExcelEntity&gt; &#123;</span><br><span class="line">    </span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 获取每一行数据和</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">invoke</span><span class="params">(UserExcelEntity userExcelEntity, AnalysisContext analysisContext)</span> &#123;</span><br><span class="line">        System.out.println(userExcelEntity);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">doAfterAllAnalysed</span><span class="params">(AnalysisContext analysisContext)</span> &#123;</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.listener.UserListener;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.File;</span><br><span class="line"><span class="keyword">import</span> java.io.FileInputStream;</span><br><span class="line"><span class="keyword">import</span> java.io.FileNotFoundException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 1、文件导入</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">FileImport</span> &#123;</span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 监听器导入</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">listenerImport</span><span class="params">()</span> <span class="keyword">throws</span> FileNotFoundException &#123;</span><br><span class="line"></span><br><span class="line">        <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">FileInputStream</span>(<span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\user.xlsx&quot;</span>);</span><br><span class="line"></span><br><span class="line">        EasyExcel.read(inputStream, UserExcelEntity.class, <span class="keyword">new</span> <span class="title class_">UserListener</span>()).sheet(<span class="number">0</span>).doRead();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h2 id="指定表头导入"><a href="#指定表头导入" class="headerlink" title="指定表头导入"></a>指定表头导入</h2><p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230813111609120.png" alt="image-20230813111609120"></p>
<blockquote>
<p><strong>如图所示，由于表头所在行数不是第一行，EasyExcel默认是指定第一行为表头，这个时候需要<code>EasyExcel.read().headRowNumber(表头所在行数)</code>指定表头所在行</strong></p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.read.listener.PageReadListener;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.File;</span><br><span class="line"><span class="keyword">import</span> java.io.FileInputStream;</span><br><span class="line"><span class="keyword">import</span> java.io.FileNotFoundException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 1、文件导入</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">FileImport</span> &#123;</span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 导入监听器</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">listenerImport</span><span class="params">()</span> <span class="keyword">throws</span> FileNotFoundException &#123;</span><br><span class="line"></span><br><span class="line">        <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">FileInputStream</span>(<span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\user.xlsx&quot;</span>);</span><br><span class="line"></span><br><span class="line">        EasyExcel.read(inputStream, UserExcelEntity.class, <span class="keyword">new</span> <span class="title class_">PageReadListener</span>&lt;&gt;(<span class="built_in">this</span>::consumerMethod))</span><br><span class="line">                .headRowNumber(<span class="number">3</span>)</span><br><span class="line">                .sheet(<span class="number">0</span>).doRead();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 消费函数</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">void</span> <span class="title function_">consumerMethod</span><span class="params">(List&lt;UserExcelEntity&gt; list)</span> &#123;</span><br><span class="line">        list.forEach(System.out::println);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h2 id="导入异常处理"><a href="#导入异常处理" class="headerlink" title="导入异常处理"></a>导入异常处理</h2><blockquote>
<p><strong><code>ReadListener</code>接口中的<code>onException</code>为出现异常时会执行的方法</strong></p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.context.AnalysisContext;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.read.listener.ReadListener;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.excel.UserExcelEntity;</span><br><span class="line"><span class="keyword">import</span> lombok.extern.slf4j.Slf4j;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 用户信息excel导入监听器</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Slf4j</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">UserListener</span> <span class="keyword">implements</span> <span class="title class_">ReadListener</span>&lt;UserExcelEntity&gt; &#123;</span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">invoke</span><span class="params">(UserExcelEntity userExcelEntity, AnalysisContext analysisContext)</span> &#123;</span><br><span class="line">        System.out.println(userExcelEntity);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">doAfterAllAnalysed</span><span class="params">(AnalysisContext analysisContext)</span> &#123;</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 当出现异常时，该方法会执行</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">onException</span><span class="params">(Exception exception, AnalysisContext context)</span> <span class="keyword">throws</span> Exception &#123;</span><br><span class="line">        log.error(<span class="string">&quot;Excel导入报错&quot;</span>);</span><br><span class="line">        ReadListener.<span class="built_in">super</span>.onException(exception, context);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h2 id="文件上传导入"><a href="#文件上传导入" class="headerlink" title="文件上传导入"></a>文件上传导入</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 文件上传</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> file 上传的文件</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@return</span> true：上传成功。false：上传失败</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@ApiOperation(value = &quot;文件上传&quot;, httpMethod = &quot;POST&quot;, response = ResponseUtils.class, produces = &quot;application/json&quot;)</span></span><br><span class="line"><span class="meta">@PostMapping(&quot;/upload&quot;)</span></span><br><span class="line"><span class="keyword">public</span> ResponseUtils&lt;Boolean&gt; <span class="title function_">uploadFile</span><span class="params">(<span class="meta">@RequestParam(&quot;file&quot;)</span> MultipartFile file)</span> <span class="keyword">throws</span> IOException &#123;</span><br><span class="line">    <span class="type">Boolean</span> <span class="variable">isSuccess</span> <span class="operator">=</span> userService.uploadFile(file);</span><br><span class="line">    <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">ResponseUtils</span>&lt;Boolean&gt;().success(isSuccess ? <span class="string">&quot;上传成功&quot;</span> : <span class="string">&quot;上传失败&quot;</span>, isSuccess);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 文件上传</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> file 上传的文件</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@return</span> true：上传成功。false：上传失败</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Override</span></span><br><span class="line"><span class="keyword">public</span> Boolean <span class="title function_">uploadFile</span><span class="params">(MultipartFile file)</span> <span class="keyword">throws</span> IOException &#123;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (file == <span class="literal">null</span>) &#123;</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">RuntimeException</span>(<span class="string">&quot;上传的文件不能为空&quot;</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">//获取file的文件流</span></span><br><span class="line">    <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> file.getInputStream();</span><br><span class="line"></span><br><span class="line">    <span class="comment">//EasyExcel读取inputStream里面的数据，批量插入数据库中</span></span><br><span class="line">    EasyExcel.read(inputStream, UserEntity.class, <span class="keyword">new</span> <span class="title class_">PageReadListener</span>&lt;&gt;(<span class="built_in">this</span>::addBatch)).headRowNumber(<span class="number">3</span>).sheet().doRead();</span><br><span class="line"></span><br><span class="line">    <span class="comment">//返回处理结果</span></span><br><span class="line">    <span class="keyword">return</span> <span class="literal">true</span>;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 批量添加数据</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> userEntityList 数据集合</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@return</span> true：添加成功。false：添加失败</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Override</span></span><br><span class="line"><span class="meta">@CacheEvict(cacheNames = RedisConstant.BASE_CACHE_KEY + &quot;user&quot;, allEntries = true)</span></span><br><span class="line"><span class="keyword">public</span> Boolean <span class="title function_">addBatch</span><span class="params">(List&lt;UserEntity&gt; userEntityList)</span> &#123;</span><br><span class="line">    <span class="keyword">return</span> <span class="built_in">this</span>.saveBatch(userEntityList);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h1 id="文件导出"><a href="#文件导出" class="headerlink" title="文件导出"></a>文件导出</h1><h2 id="基本方式导出"><a href="#基本方式导出" class="headerlink" title="基本方式导出"></a>基本方式导出</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Test</span></span><br><span class="line"><span class="keyword">void</span> <span class="title function_">baseImport</span><span class="params">()</span> &#123;</span><br><span class="line">    <span class="type">String</span> <span class="variable">filePath</span> <span class="operator">=</span> <span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\userExport.xlsx&quot;</span>;</span><br><span class="line">    List&lt;UserEntity&gt; userEntities = userService.selectList();</span><br><span class="line"></span><br><span class="line">    EasyExcel.write(filePath).sheet(<span class="string">&quot;导出数据&quot;</span>).head(UserEntity.class).doWrite(userEntities);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h2 id="模型映射导出"><a href="#模型映射导出" class="headerlink" title="模型映射导出"></a>模型映射导出</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.UserEntity;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.service.UserService;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.boot.test.context.SpringBootTest;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="meta">@SpringBootTest</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">EasyExcelApplicationTest</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> UserService userService;</span><br><span class="line">    </span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 基础导入</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">baseImport</span><span class="params">()</span> &#123;</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 从数据库中查询数据</span></span><br><span class="line">        List&lt;UserEntity&gt; userEntities = userService.selectList();</span><br><span class="line"></span><br><span class="line">        <span class="comment">/**</span></span><br><span class="line"><span class="comment">         * 将查询出来的数据导入Excel表格中</span></span><br><span class="line"><span class="comment">         */</span></span><br><span class="line">        <span class="type">String</span> <span class="variable">filePath</span> <span class="operator">=</span> <span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\userExport.xlsx&quot;</span>;</span><br><span class="line">        EasyExcel.write(filePath).sheet(<span class="string">&quot;导出数据&quot;</span>).head(UserEntity.class).doWrite(userEntities);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h2 id="导出行高列宽"><a href="#导出行高列宽" class="headerlink" title="导出行高列宽"></a>导出行高列宽</h2><blockquote>
<p><strong>在实体类的字段或类上，添加对应的注解</strong></p>
</blockquote>
<p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230813162000907.png" alt="image-20230813162000907"></p>
<blockquote>
<p><strong>EasyExcel.write(filePath).sheet(“导出数据”).registerWriteHandler对应的策略，也可以写一个类继承<code>AbstractColumnWidthStyleStrategy</code></strong></p>
</blockquote>
<p><img src= "" data-lazy-src="https://www.naste.top:9000/images/image-20230813162104164.png" alt="image-20230813162104164"></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.style.column.SimpleColumnWidthStyleStrategy;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.entity.UserEntity;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.service.UserService;</span><br><span class="line"><span class="keyword">import</span> org.junit.jupiter.api.Test;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.boot.test.context.SpringBootTest;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="meta">@SpringBootTest</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">EasyExcelApplicationTest</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> UserService userService;</span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 基础导入</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Test</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">baseImport</span><span class="params">()</span> &#123;</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 从数据库中查询数据</span></span><br><span class="line">        List&lt;UserEntity&gt; userEntities = userService.selectList();</span><br><span class="line"></span><br><span class="line">        <span class="comment">/**</span></span><br><span class="line"><span class="comment">         * 将查询出来的数据导入Excel表格中</span></span><br><span class="line"><span class="comment">         */</span></span><br><span class="line">        <span class="type">String</span> <span class="variable">filePath</span> <span class="operator">=</span> <span class="string">&quot;C:\\Users\\19030\\Desktop\\tmp\\userExport.xlsx&quot;</span>;</span><br><span class="line">        EasyExcel</span><br><span class="line">                .write(filePath)</span><br><span class="line">                .sheet(<span class="string">&quot;导出数据&quot;</span>).head(UserEntity.class)</span><br><span class="line">                .registerWriteHandler(<span class="keyword">new</span> <span class="title class_">SimpleColumnWidthStyleStrategy</span>(<span class="number">30</span>))</span><br><span class="line">                .doWrite(userEntities);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<blockquote>
<p><strong>也可以写一个类，继承<code>AbstractCellStyleStrategy</code>并且实现<code>CellWriteHandler</code>，编写一个EasyExcel的自定义拦截器</strong></p>
</blockquote>
<h2 id="合并单元格导出"><a href="#合并单元格导出" class="headerlink" title="合并单元格导出"></a>合并单元格导出</h2><h2 id="导出动态表头"><a href="#导出动态表头" class="headerlink" title="导出动态表头"></a>导出动态表头</h2><h2 id="导出链接批注公式"><a href="#导出链接批注公式" class="headerlink" title="导出链接批注公式"></a>导出链接批注公式</h2><h2 id="导出图片内容"><a href="#导出图片内容" class="headerlink" title="导出图片内容"></a>导出图片内容</h2><h1 id="填充模板"><a href="#填充模板" class="headerlink" title="填充模板"></a>填充模板</h1><h2 id="模板填充对象"><a href="#模板填充对象" class="headerlink" title="模板填充对象"></a>模板填充对象</h2><h2 id="模板填充列表"><a href="#模板填充列表" class="headerlink" title="模板填充列表"></a>模板填充列表</h2><h2 id="模板组合填充"><a href="#模板组合填充" class="headerlink" title="模板组合填充"></a>模板组合填充</h2><h2 id="导出文件下载"><a href="#导出文件下载" class="headerlink" title="导出文件下载"></a>导出文件下载</h2><h1 id="工具类"><a href="#工具类" class="headerlink" title="工具类"></a>工具类</h1><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.enums.CellDataTypeEnum;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.metadata.Head;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.metadata.data.WriteCellData;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.util.MapUtils;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.metadata.holder.WriteSheetHolder;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.style.column.AbstractColumnWidthStyleStrategy;</span><br><span class="line"><span class="keyword">import</span> org.apache.commons.collections4.CollectionUtils;</span><br><span class="line"><span class="keyword">import</span> org.apache.poi.ss.usermodel.Cell;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Component;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.HashMap;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"><span class="keyword">import</span> java.util.Map;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * Excel导出自定义列宽策略设置</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Component</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">ColumnWidthStyleStrategy</span> <span class="keyword">extends</span> <span class="title class_">AbstractColumnWidthStyleStrategy</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">final</span> <span class="type">int</span> <span class="variable">MAX_COLUMN_WIDTH</span> <span class="operator">=</span> <span class="number">255</span>;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span> Map&lt;Integer, Map&lt;Integer, Integer&gt;&gt; cache = MapUtils.newHashMapWithExpectedSize(<span class="number">8</span>);</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 设置列宽度</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">protected</span> <span class="keyword">void</span> <span class="title function_">setColumnWidth</span><span class="params">(WriteSheetHolder writeSheetHolder, List&lt;WriteCellData&lt;?&gt;&gt; cellDataList, Cell cell, Head head, Integer relativeRowIndex, Boolean isHead)</span> &#123;</span><br><span class="line">        <span class="type">boolean</span> <span class="variable">needSetWidth</span> <span class="operator">=</span> isHead || !CollectionUtils.isEmpty(cellDataList);</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 是否需要设置宽度</span></span><br><span class="line">        <span class="keyword">if</span> (needSetWidth) &#123;</span><br><span class="line">            Map&lt;Integer, Integer&gt; maxColumnWidthMap = <span class="built_in">this</span>.cache.computeIfAbsent(writeSheetHolder.getSheetNo(), (key) -&gt; <span class="keyword">new</span> <span class="title class_">HashMap</span>&lt;&gt;(<span class="number">16</span>));</span><br><span class="line">            <span class="type">Integer</span> <span class="variable">columnWidth</span> <span class="operator">=</span> <span class="built_in">this</span>.dataLength(cellDataList, cell, isHead);</span><br><span class="line">            <span class="comment">// 列宽判断</span></span><br><span class="line">            <span class="keyword">if</span> (columnWidth &gt;= <span class="number">0</span>) &#123;</span><br><span class="line">                <span class="keyword">if</span> (columnWidth &gt; MAX_COLUMN_WIDTH) &#123;</span><br><span class="line">                    columnWidth = MAX_COLUMN_WIDTH;</span><br><span class="line">                &#125;</span><br><span class="line"></span><br><span class="line">                <span class="type">Integer</span> <span class="variable">maxColumnWidth</span> <span class="operator">=</span> maxColumnWidthMap.get(cell.getColumnIndex());</span><br><span class="line">                <span class="keyword">if</span> (maxColumnWidth == <span class="literal">null</span> || columnWidth &gt; maxColumnWidth) &#123;</span><br><span class="line">                    maxColumnWidthMap.put(cell.getColumnIndex(), columnWidth);</span><br><span class="line">                    writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), (columnWidth + <span class="number">15</span>) * MAX_COLUMN_WIDTH);</span><br><span class="line">                &#125;</span><br><span class="line"></span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 数据长度获取</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">private</span> Integer <span class="title function_">dataLength</span><span class="params">(List&lt;WriteCellData&lt;?&gt;&gt; cellDataList, Cell cell, Boolean isHead)</span> &#123;</span><br><span class="line">        <span class="keyword">if</span> (isHead) &#123;</span><br><span class="line">            <span class="keyword">return</span> cell.getStringCellValue().getBytes().length;</span><br><span class="line">        &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">            WriteCellData&lt;?&gt; cellData = cellDataList.get(<span class="number">0</span>);</span><br><span class="line">            <span class="type">CellDataTypeEnum</span> <span class="variable">type</span> <span class="operator">=</span> cellData.getType();</span><br><span class="line">            <span class="keyword">if</span> (type == <span class="literal">null</span>) &#123;</span><br><span class="line">                <span class="keyword">return</span> -<span class="number">1</span>;</span><br><span class="line">            &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">                <span class="keyword">switch</span> (type) &#123;</span><br><span class="line">                    <span class="keyword">case</span> STRING:</span><br><span class="line">                        <span class="keyword">return</span> cellData.getStringValue().getBytes().length;</span><br><span class="line">                    <span class="keyword">case</span> BOOLEAN:</span><br><span class="line">                        <span class="keyword">return</span> cellData.getBooleanValue().toString().getBytes().length;</span><br><span class="line">                    <span class="keyword">case</span> NUMBER:</span><br><span class="line">                        <span class="keyword">return</span> cellData.getNumberValue().toString().getBytes().length;</span><br><span class="line">                    <span class="keyword">default</span>:</span><br><span class="line">                        <span class="keyword">return</span> -<span class="number">1</span>;</span><br><span class="line">                &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span 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class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br><span class="line">187</span><br><span class="line">188</span><br><span class="line">189</span><br><span class="line">190</span><br><span class="line">191</span><br><span class="line">192</span><br><span class="line">193</span><br><span class="line">194</span><br><span class="line">195</span><br><span class="line">196</span><br><span class="line">197</span><br><span class="line">198</span><br><span class="line">199</span><br><span class="line">200</span><br><span class="line">201</span><br><span class="line">202</span><br><span class="line">203</span><br><span class="line">204</span><br><span class="line">205</span><br><span class="line">206</span><br><span class="line">207</span><br><span class="line">208</span><br><span class="line">209</span><br><span class="line">210</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.enums.BooleanEnum;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.event.SyncReadListener;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.read.listener.PageReadListener;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.support.ExcelTypeEnum;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.metadata.style.WriteCellStyle;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.metadata.style.WriteFont;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.style.HorizontalCellStyleStrategy;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.write.style.row.SimpleRowHeightStyleStrategy;</span><br><span class="line"><span class="keyword">import</span> com.xiaofei.excel.strategy.ColumnWidthStyleStrategy;</span><br><span class="line"><span class="keyword">import</span> org.apache.poi.ss.usermodel.*;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Component;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"><span class="keyword">import</span> java.net.URLEncoder;</span><br><span class="line"><span class="keyword">import</span> java.util.ArrayList;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"><span class="keyword">import</span> java.util.function.Consumer;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * EasyExcel工具类</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Component</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">EasyExcelUtils</span> &#123;</span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 读取指定的文件中的指定的sheet并且指定Consumer对数据进行消费</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> inputStream 文件流</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> head        读取的数据要转换成哪个类型</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> consumer    用于消费数据方法</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> sheetName   sheetName名称</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; <span class="keyword">void</span> <span class="title function_">readFile</span><span class="params">(InputStream inputStream, Class&lt;T&gt; head, Consumer&lt;List&lt;T&gt;&gt; consumer, String sheetName, Integer headRowNumber)</span> &#123;</span><br><span class="line">        EasyExcel.read(inputStream, head, <span class="keyword">new</span> <span class="title class_">PageReadListener</span>&lt;&gt;(consumer))</span><br><span class="line">                .autoCloseStream(<span class="literal">false</span>) <span class="comment">// 不要自动关闭，交给 Servlet 自己处理</span></span><br><span class="line">                .headRowNumber(headRowNumber == <span class="literal">null</span> ? <span class="number">1</span> : headRowNumber)</span><br><span class="line">                .sheet(sheetName)</span><br><span class="line">                .doReadSync();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 读取指定的文件中的指定的sheet并且指定Consumer对数据进行消费</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> inputStream 文件流</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> head        读取的数据要转换成哪个类型</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> consumer    用于消费数据方法</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; <span class="keyword">void</span> <span class="title function_">readFile</span><span class="params">(InputStream inputStream, Class&lt;T&gt; head, Consumer&lt;List&lt;T&gt;&gt; consumer, Integer headRowNumber)</span> &#123;</span><br><span class="line">        EasyExcel.read(inputStream, head, <span class="keyword">new</span> <span class="title class_">PageReadListener</span>&lt;T&gt;(consumer))</span><br><span class="line">                .autoCloseStream(<span class="literal">false</span>) <span class="comment">// 不要自动关闭，交给 Servlet 自己处理</span></span><br><span class="line">                .headRowNumber(headRowNumber == <span class="literal">null</span> ? <span class="number">1</span> : headRowNumber)</span><br><span class="line">                .doReadAllSync();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 读取指定的文件中的指定的sheet并且指定Consumer对数据进行消费</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> inputStream   文件流</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> head          读取的数据要转换成哪个类型</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> sheetName     sheetName名称</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> headRowNumber 表头在哪一行</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; List&lt;T&gt; <span class="title function_">readFile</span><span class="params">(InputStream inputStream, Class&lt;T&gt; head, String sheetName, Integer headRowNumber)</span> &#123;</span><br><span class="line">        <span class="type">SyncReadListener</span> <span class="variable">syncReadListener</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">SyncReadListener</span>();</span><br><span class="line">        EasyExcel.read(inputStream, head, syncReadListener)</span><br><span class="line">                .autoCloseStream(<span class="literal">false</span>) <span class="comment">// 不要自动关闭，交给 Servlet 自己处理</span></span><br><span class="line">                .headRowNumber(headRowNumber == <span class="literal">null</span> ? <span class="number">1</span> : headRowNumber)</span><br><span class="line">                .sheet(sheetName)</span><br><span class="line">                .doReadSync();</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 判断获取到的数据是否为空</span></span><br><span class="line">        <span class="keyword">if</span> (syncReadListener.getList() != <span class="literal">null</span>) &#123;</span><br><span class="line">            <span class="keyword">return</span> (List&lt;T&gt;) syncReadListener.getList();</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">ArrayList</span>&lt;&gt;();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 读取指定的文件中的指定的sheet并且指定Consumer对数据进行消费</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> inputStream 文件流</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> head        读取的数据要转换成哪个类型</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; List&lt;T&gt; <span class="title function_">readFile</span><span class="params">(InputStream inputStream, Class&lt;T&gt; head, Integer headRowNumber)</span> &#123;</span><br><span class="line">        <span class="type">SyncReadListener</span> <span class="variable">syncReadListener</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">SyncReadListener</span>();</span><br><span class="line"></span><br><span class="line">        EasyExcel.read(inputStream, head, syncReadListener)</span><br><span class="line">                .autoCloseStream(<span class="literal">false</span>) <span class="comment">// 不要自动关闭，交给 Servlet 自己处理</span></span><br><span class="line">                .headRowNumber(headRowNumber == <span class="literal">null</span> ? <span class="number">1</span> : headRowNumber)</span><br><span class="line">                .doReadAllSync();</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 判断获取到的数据是否为空</span></span><br><span class="line">        <span class="keyword">if</span> (syncReadListener.getList() != <span class="literal">null</span>) &#123;</span><br><span class="line">            <span class="keyword">return</span> (List&lt;T&gt;) syncReadListener.getList();</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">ArrayList</span>&lt;&gt;();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 将数据写入Excel中</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; <span class="keyword">void</span> <span class="title function_">writeFile</span><span class="params">(HttpServletResponse response, String filename, String sheetName, Class&lt;T&gt; head, List&lt;T&gt; data)</span> <span class="keyword">throws</span> IOException &#123;</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 设置 header 和 contentType。写在最后的原因是，避免报错时，响应 contentType 已经被修改了</span></span><br><span class="line">        response.setContentType(<span class="string">&quot;application/vnd.ms-excel&quot;</span>);</span><br><span class="line">        response.setCharacterEncoding(<span class="string">&quot;utf-8&quot;</span>);</span><br><span class="line">        <span class="comment">// 这里URLEncoder.encode可以防止中文乱码</span></span><br><span class="line">        filename = URLEncoder.encode(filename, <span class="string">&quot;UTF-8&quot;</span>);</span><br><span class="line">        response.setHeader(<span class="string">&quot;Content-disposition&quot;</span>, <span class="string">&quot;attachment;filename=&quot;</span> + filename + <span class="string">&quot;_&quot;</span> + System.currentTimeMillis() + ExcelTypeEnum.XLSX.getValue());</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 头样式策略</span></span><br><span class="line">        <span class="type">HorizontalCellStyleStrategy</span> <span class="variable">horizontalCellStyleStrategy</span> <span class="operator">=</span></span><br><span class="line">                <span class="keyword">new</span> <span class="title class_">HorizontalCellStyleStrategy</span>(headWriteCellStyle(), contentWriteCellStyle());</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 内容样式策略</span></span><br><span class="line">        EasyExcel</span><br><span class="line">                .write(response.getOutputStream(), head)</span><br><span class="line">                .autoCloseStream(<span class="literal">false</span>) <span class="comment">// 不要自动关闭，交给 Servlet 自己处理</span></span><br><span class="line">                .registerWriteHandler(<span class="keyword">new</span> <span class="title class_">ColumnWidthStyleStrategy</span>()) <span class="comment">// 自动适配宽度策略</span></span><br><span class="line">                .registerWriteHandler(<span class="keyword">new</span> <span class="title class_">SimpleRowHeightStyleStrategy</span>((<span class="type">short</span>) <span class="number">30</span>, (<span class="type">short</span>) <span class="number">25</span>))<span class="comment">//设置表头行高和内容行高</span></span><br><span class="line">                .registerWriteHandler(horizontalCellStyleStrategy) <span class="comment">// 设置自定义样式</span></span><br><span class="line">                .sheet(sheetName)</span><br><span class="line">                .doWrite(data);</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * Excel表头样式</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> WriteCellStyle <span class="title function_">headWriteCellStyle</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="comment">// 头的策略</span></span><br><span class="line">        <span class="type">WriteCellStyle</span> <span class="variable">headWriteCellStyle</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">WriteCellStyle</span>();</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 字体</span></span><br><span class="line">        <span class="type">WriteFont</span> <span class="variable">headWriteFont</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">WriteFont</span>();</span><br><span class="line">        headWriteFont.setFontName(<span class="string">&quot;仿宋&quot;</span>);<span class="comment">//设置字体名字</span></span><br><span class="line">        headWriteFont.setFontHeightInPoints((<span class="type">short</span>) <span class="number">16</span>);<span class="comment">//设置字体大小</span></span><br><span class="line">        headWriteFont.setBold(BooleanEnum.TRUE.getBooleanValue());<span class="comment">//字体是否加粗</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 样式</span></span><br><span class="line">        headWriteCellStyle.setWriteFont(headWriteFont); <span class="comment">//在样式用应用设置的字体样式;</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 背景</span></span><br><span class="line">        headWriteCellStyle.setFillForegroundColor(IndexedColors.PALE_BLUE.index);<span class="comment">//背景颜色</span></span><br><span class="line">        headWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);<span class="comment">//背景颜色填充类型</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">//边框</span></span><br><span class="line">        headWriteCellStyle.setBorderBottom(BorderStyle.THIN);<span class="comment">//设置底边框;</span></span><br><span class="line">        headWriteCellStyle.setBottomBorderColor((IndexedColors.BLACK1.index));<span class="comment">//设置底边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderLeft(BorderStyle.THIN);  <span class="comment">//设置左边框;</span></span><br><span class="line">        headWriteCellStyle.setLeftBorderColor(IndexedColors.BLACK1.index);<span class="comment">//设置左边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderRight(BorderStyle.THIN);<span class="comment">//设置右边框;</span></span><br><span class="line">        headWriteCellStyle.setRightBorderColor(IndexedColors.BLACK1.index);<span class="comment">//设置右边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderTop(BorderStyle.THIN);<span class="comment">//设置顶边框;</span></span><br><span class="line">        headWriteCellStyle.setTopBorderColor(IndexedColors.BLACK1.index); <span class="comment">//设置顶边框颜色;</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 其他</span></span><br><span class="line">        headWriteCellStyle.setWrapped(BooleanEnum.FALSE.getBooleanValue());  <span class="comment">//设置自动换行;</span></span><br><span class="line">        headWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);<span class="comment">//设置水平对齐的样式为居中对齐;</span></span><br><span class="line">        headWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);  <span class="comment">//设置垂直对齐的样式为居中对齐;</span></span><br><span class="line">        headWriteCellStyle.setShrinkToFit(BooleanEnum.FALSE.getBooleanValue());<span class="comment">//设置文本收缩至合适</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> headWriteCellStyle;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * Excel内容样式</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> WriteCellStyle <span class="title function_">contentWriteCellStyle</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="comment">// 头的策略</span></span><br><span class="line">        <span class="type">WriteCellStyle</span> <span class="variable">headWriteCellStyle</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">WriteCellStyle</span>();</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 字体</span></span><br><span class="line">        <span class="type">WriteFont</span> <span class="variable">headWriteFont</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">WriteFont</span>();</span><br><span class="line">        headWriteFont.setFontName(<span class="string">&quot;仿宋&quot;</span>);<span class="comment">//设置字体名字</span></span><br><span class="line">        headWriteFont.setFontHeightInPoints((<span class="type">short</span>) <span class="number">14</span>);<span class="comment">//设置字体大小</span></span><br><span class="line">        headWriteFont.setBold(BooleanEnum.FALSE.getBooleanValue());<span class="comment">//字体是否加粗</span></span><br><span class="line">        headWriteFont.setColor(IndexedColors.BLACK.index);</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 样式</span></span><br><span class="line">        headWriteCellStyle.setWriteFont(headWriteFont); <span class="comment">//在样式用应用设置的字体样式;</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 背景</span></span><br><span class="line">        headWriteCellStyle.setFillForegroundColor(IndexedColors.WHITE.index);<span class="comment">//背景颜色</span></span><br><span class="line">        headWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);<span class="comment">//背景颜色填充类型</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">//边框</span></span><br><span class="line">        headWriteCellStyle.setBorderBottom(BorderStyle.THIN);<span class="comment">//设置底边框;</span></span><br><span class="line">        headWriteCellStyle.setBottomBorderColor((IndexedColors.BLACK1.index));<span class="comment">//设置底边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderLeft(BorderStyle.THIN);  <span class="comment">//设置左边框;</span></span><br><span class="line">        headWriteCellStyle.setLeftBorderColor(IndexedColors.BLACK1.index);<span class="comment">//设置左边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderRight(BorderStyle.THIN);<span class="comment">//设置右边框;</span></span><br><span class="line">        headWriteCellStyle.setRightBorderColor(IndexedColors.BLACK1.index);<span class="comment">//设置右边框颜色;</span></span><br><span class="line">        headWriteCellStyle.setBorderTop(BorderStyle.THIN);<span class="comment">//设置顶边框;</span></span><br><span class="line">        headWriteCellStyle.setTopBorderColor(IndexedColors.BLACK1.index); <span class="comment">//设置顶边框颜色;</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 其他</span></span><br><span class="line">        headWriteCellStyle.setWrapped(BooleanEnum.FALSE.getBooleanValue());  <span class="comment">//设置自动换行;</span></span><br><span class="line">        headWriteCellStyle.setShrinkToFit(BooleanEnum.FALSE.getBooleanValue());<span class="comment">//设置文本收缩至合适</span></span><br><span class="line">        headWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);<span class="comment">//设置水平对齐的样式为居中对齐;</span></span><br><span class="line">        headWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);  <span class="comment">//设置垂直对齐的样式为居中对齐;</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> headWriteCellStyle;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</article><div class="post-copyright"><div class="post-copyright__title"><span class="post-copyright-info"><h>SpringBoot使用EasyExcel</h></span></div><div class="post-copyright__type"><span class="post-copyright-info"><a href="https://www.naste.top:1024/posts/869019539.html">https://www.naste.top:1024/posts/869019539.html</a></span></div><div class="post-copyright-m"><div class="post-copyright-m-info"><div class="post-copyright-a"><h>作者</h><div class="post-copyright-cc-info"><h>XiaoFei🥝</h></div></div><div class="post-copyright-c"><h>发布于</h><div class="post-copyright-cc-info"><h>2023-08-12</h></div></div><div class="post-copyright-u"><h>更新于</h><div class="post-copyright-cc-info"><h>2024-04-26</h></div></div><div class="post-copyright-c"><h>许可协议</h><div class="post-copyright-cc-info"><a class="icon" rel="noopener" target="_blank" title="Creative Commons" href="https://creativecommons.org/"><i class="fab fa-creative-commons"></i></a><a rel="noopener" target="_blank" title="CC BY-NC-SA 4.0" 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class="toc-text">导入的监昕器</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#%E4%BD%BF%E7%94%A8EasyExcel%E8%87%AA%E5%B8%A6%E7%9B%91%E5%90%AC%E5%99%A8"><span class="toc-text">使用EasyExcel自带监听器</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E4%BD%BF%E7%94%A8%E8%87%AA%E5%AE%9A%E4%B9%89%E7%9B%91%E5%90%AC%E5%99%A8"><span class="toc-text">使用自定义监听器</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%8C%87%E5%AE%9A%E8%A1%A8%E5%A4%B4%E5%AF%BC%E5%85%A5"><span class="toc-text">指定表头导入</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%AF%BC%E5%85%A5%E5%BC%82%E5%B8%B8%E5%A4%84%E7%90%86"><span class="toc-text">导入异常处理</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0%E5%AF%BC%E5%85%A5"><span class="toc-text">文件上传导入</span></a></li></ol></li><li class="toc-item toc-level-1"><a class="toc-link" href="#%E6%96%87%E4%BB%B6%E5%AF%BC%E5%87%BA"><span class="toc-text">文件导出</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%9F%BA%E6%9C%AC%E6%96%B9%E5%BC%8F%E5%AF%BC%E5%87%BA"><span class="toc-text">基本方式导出</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%A8%A1%E5%9E%8B%E6%98%A0%E5%B0%84%E5%AF%BC%E5%87%BA"><span class="toc-text">模型映射导出</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%AF%BC%E5%87%BA%E8%A1%8C%E9%AB%98%E5%88%97%E5%AE%BD"><span class="toc-text">导出行高列宽</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%90%88%E5%B9%B6%E5%8D%95%E5%85%83%E6%A0%BC%E5%AF%BC%E5%87%BA"><span class="toc-text">合并单元格导出</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%AF%BC%E5%87%BA%E5%8A%A8%E6%80%81%E8%A1%A8%E5%A4%B4"><span class="toc-text">导出动态表头</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%AF%BC%E5%87%BA%E9%93%BE%E6%8E%A5%E6%89%B9%E6%B3%A8%E5%85%AC%E5%BC%8F"><span class="toc-text">导出链接批注公式</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E5%AF%BC%E5%87%BA%E5%9B%BE%E7%89%87%E5%86%85%E5%AE%B9"><span class="toc-text">导出图片内容</span></a></li></ol></li><li class="toc-item toc-level-1"><a class="toc-link" href="#%E5%A1%AB%E5%85%85%E6%A8%A1%E6%9D%BF"><span class="toc-text">填充模板</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%A8%A1%E6%9D%BF%E5%A1%AB%E5%85%85%E5%AF%B9%E8%B1%A1"><span class="toc-text">模板填充对象</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%A8%A1%E6%9D%BF%E5%A1%AB%E5%85%85%E5%88%97%E8%A1%A8"><span class="toc-text">模板填充列表</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%A8%A1%E6%9D%BF%E7%BB%84%E5%90%88%E5%A1%AB%E5%85%85"><span class="toc-text">模板组合填充</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" 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